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Using the Comparator Output
To use the comparator output, perform the following four steps.
1. Connect the peripheral to the AD-8922-04 DIN connector.
2. Set the “Comparator (
Cp fnc
)” of the AD-8922 function setting. For details, see “4. FUNCTION
SETTINGS”.
3. Set the upper and lower limit values. For details, see “11-3 Setting the Upper and Lower Limit
values”.
4. When the weighing data is received, the comparison results will be output.
When the weighing data is equal to or less than the upper limit value, and equal to or greater than
the lower limit value, the OK comparator will be output.
Comparator output
LO
OK
HI
Weighing data
>
upper limit
Open
Open
Short
Upper limit
≥
weighing data
≥
lower limit Open
Short
Open
Weighing data
<
lower limit
Short
Open
Open
Whether or not to sound the buzzer when the contact output is shorted
can be set in the “Buzzer mode (
bep
) of the “Comparator (
Cp fnc
)”.
Note:
When setting the upper and lower limit values, make sure that the upper
limit value is greater than the lower limit value.
Function setting
The function setting "
Cp fnc
” is available only when the AD-8922-04 is installed.
Class Item
Parameter
Description
0
No comparison
1
Comparison, excluding "near zero" when the value is
stable or overloaded
2
Comparison, including "near zero" when the value is
stable or overloaded
3
Continuous comparison, excluding "near zero"
4
Continuous comparison, including "near zero"
Cp
Comparator
mode
5
Contact-outputs the second header information of the
data received. (Applicable to AD-4212, GP and GX-K)
0
OFF
bep
LO buzzer
1
ON
Selects whether or not to sound the
buzzer when LO.
0
OFF
bep-
OK buzzer
1
ON
Selects whether or not to sound the
buzzer when OK.
0
OFF
Cp fnc
Comparator
bep
HI buzzer
1
ON
Selects whether or not to sound the
buzzer when HI.
Factory setting
Note: “Near zero” indicates the amount of ten digits (Digit = the smallest displayable weighing
value).
Содержание AD-8922
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